How Is Glucose Transported In The Blood
Bio questions! I will choose a best answer… :]?
The following are some questions that i can’t answer and need help with. Please try your best to answer. Thank you 
1. When a person in the hospital is given fluid intravenously (an I.V) the flluid is typically a saline solution with about the same water concentration as human body tissues. Explain how using distilled water in place of this solution would upset the patient homeostasis. Refer to the process of diffusion.
2. Many fresh water one celled organisms have structures called contractile vacuoles. These structures collect and pump out excess water in the cell. Explain why contractile vacuoles would be of little value to one celled organisms living in salt water.
3. In many animals, glucose, rather then starch is transported by the blood through they body to all the cell. Starches in many foods are digested to yield glucose. Why is the digestion of starch to glucose necessary?
Thanks!
1. First of all, you should know that diffusion is when particles move from higher concentration to lower concentration so that they are distributed evenly. If they use distilled water as an I.V. fluid, that will disrupt homeostasis. Distilled water has VERY low concentration of other particles. So when’s it’s in your blood, the particles in your cells want to move out to the blood. This is because the particle’s concentration in your cell is much higher than the blood with distilled water. Thinking backwards, the distilled water in your blood will want to move into these cells because the water concentration inside the cell is lower. As a result, cell will lose important particles and gain too much water and swell, which cause problems.
2. This is the same idea as question #1. Since in salt water, the concentration of water is higher inside the cell than outside, the water will automatically move from the cell to the surrounding water, as a result of diffusion. Therefore, contractile vacuoles are not needed in this case.
3. Glucose is necessary because cells cannot use the energy stored in starch. It must be broken into tiny glucose first. Starch is just too “big” and complex for the cell to directly use it in their cellular respiration process.
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